Chemical Name: Pregn-4-ene-3,20-dione, 11-hydroxy-, (11α)-; Pregn-4-ene-3,20-dione, 11α-hydroxy- (8CI); Progesterone, 11α-hydroxy- (5CI); (11α)-11-Hydroxypregn-4-ene-3,20-dione; 11-Hydroxyprogesterone; 11α-Hydroxypregn-4-ene-3,20-dione; 11α-Hydroxyprogesterone; 4-Pregnene-11α-ol-3,20-dione; Pregn-4-en-11α-ol-3,20-dione